Fix SF bug 1395874. When both "all" and "all-chroots" options were registered

and "--all" was specified on command line and approximation was on,
ambiguity was reported. Now, "all" is recognized.


[SVN r32263]

libs/program_options

@@ -1 +1 @@
-Subproject commit d8c809b0a389baab15996d7d6d207a6459d6b329
+Subproject commit 5e4b39d672783a320a0fc1d027140bf551fa88b5